Police fired tear gas to disperse Kenyans who threw stones and broke into the homes and shops of ethnic Somalis in Nairobi’s Somali-dominated Eastleigh neighbourhood on Monday to protest against a bomb attack in the district on Sunday.

Kenyan troops from the African Union force in Somalia entered the southern port of Kismayo for the first time on Monday, witnesses said, three days after launching a beach assault that led Islamist insurgents to pull out.

“They arrived from the west of the city and are taking up positions,” Aden Ismail, a local trader said. The report was confirmed by at least two other residents.